verilator_includer: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/share/verilator/bin/verilator_includer - from package: verilator

You may install the required package with command apt-get install {package}
Error in other languages:
verilator_includer: bevel nie gevind nie
verilator_includer: comandă negăsită
verilator_includer: comando não encontrado
verilator_includer: commande introuvable
verilator_includer: command not found
verilator_includer: käsku ei ole
verilator_includer: không tìm thấy lệnh
verilator_includer: komanda nerasta
verilator_includer: Kommando nicht gefunden.
verilator_includer: kommandot finns inte
verilator_includer: komut yok
verilator_includer: nie znaleziono polecenia
verilator_includer: níor aimsíodh an t-ordú
verilator_includer: no se encontró la orden
verilator_includer: no s'ha trobat l'ordre
verilator_includer: opdracht niet gevonden
verilator_includer: parancs nem található
verilator_includer: perintah tidak ditemukan
verilator_includer: príkaz nenájdený
verilator_includer: příkaz nenalezen
verilator_includer: команда не найдена
verilator_includer: командата не е открита
verilator_includer: 命令找不到
verilator_includer: コマンドが見つかりません